Encoders are sensors that measure physical movement—such as the rotation of a motor—and convert it into electrical signals. This allows us to determine how much a motor has rotated and use that information as digital input in a robot’s control system. They are essential for achieving precise motion control, especially in applications that require accurate positioning or speed regulation. Robots rely on encoders to ensure smooth movement, feedback, and reliable automation.

The press release below is by US Digital, about their new encoder display.

US Digital’s New ED4 Digital Encoder Display

Vancouver, Washington – November 19, 2025. US Digital announced today the release of our new ED4 Encoder Display. Encoder displays provide immediate feedback on encoder status, including speed, position, angle, and count. The ED4 encoder display features a programmable alarm output on each channel.

• Easy, intuitive setup
• Dual encoder inputs
• User defined display units
• Supports A/B, Analog, and PWM encoder outputs

Building on the proven performance of the ED3, the ED4 introduces a modern user interface, expanded input capabilities, and flexible configuration options for a wide range of motion control applications. Its color LCD with capacitive touchscreen and adjustable backlight offers improved visibility and an improved user experience. The ED4 supports quadrature, analog, and PWM encoder inputs, ensuring compatibility with most encoders.

ED4 showing color screen and examples of user-defined units

Users can easily customize units of measure, scale factors, trigger set points, and even the encoder name. Four I/O pins are included for alarm outputs and capture inputs. The Datasheet and Quick Start Guide provide full specifications and setup information to help integrate the ED4 into your next project.

ED4 showing all available connections

As with all US Digital products, the ED4 was designed and produced in Vancouver, Washington USA, backed with prompt access to our technical and customer service teams with same-day shipping on most orders. The new ED4 is now ready for shipping worldwide. Find more information at usdigital.com.

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